cpp/openttd-patchpack/source Changeset - r14585:9eda4f8ccfec

Changeset - r14585:9eda4f8ccfec

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terkhen - 15 years ago 2010-02-20 18:12:56
terkhen@openttd.org

(svn r19171) -Codechange: Split CheckFlatLandBelow into different functions.

2 files changed with 53 insertions and 8 deletions:

src/station_cmd.cpp

src/unmovable_cmd.cpp

0 comments (0 inline, 0 general)

src/station_cmd.cpp

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@@ @@ -715,13 +715,35 @@ CommandCost CheckBuildableTile(TileIndex @@
 /** Tries to clear the given area.
  * @param tile_area Area to check.
  * @param flags Operation to perform.
  * @return The cost in case of success, or an error code if it failed.
  */
 CommandCost CheckFlatLand(TileArea tile_area, DoCommandFlag flags)
+{
 	CommandCost cost(EXPENSES_CONSTRUCTION);
 	int allowed_z = -1;
 	TILE_AREA_LOOP(tile_cur, tile_area) {
 		CommandCost ret = CheckBuildableTile(tile_cur, 0, allowed_z);
 		if (ret.Failed()) return ret;
 		cost.AddCost(ret);
 		ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
 		if (ret.Failed()) return ret;
 		cost.AddCost(ret);
+	}
 	return cost;
+}
 /** Checks if a rail station can be built at the given area.
  * @param tile_area Area to check.
  * @param flags Operation to perform.
  * @param invalid_dirs Prohibited directions (set of #DiagDirection).
  * @param station StationID to be queried and returned if available.
  * @param check_clear If clearing tile should be performed (in wich case, cost will be added).
  * @param rt The rail type to check for (overbuilding rail stations over rail).
  * @return The cost in case of success, or an error code if it failed.
  */
-CommandCost CheckFlatLandBelow(TileArea tile_area, DoCommandFlag flags, uint invalid_dirs, StationID *station, bool check_clear = true, RailType rt = INVALID_RAILTYPE)
+static CommandCost CheckFlatLandRailStation(TileArea tile_area, DoCommandFlag flags, uint invalid_dirs, StationID *station, RailType rt = INVALID_RAILTYPE)
+{
 	CommandCost cost(EXPENSES_CONSTRUCTION);
 	int allowed_z = -1;
@@ @@ -745,7 +767,7 @@ CommandCost CheckFlatLandBelow(TileArea @@
 					return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
+				}
+			}
-		} else if (check_clear) {
 		} else {
 			/* Rail type is only valid when building a railway station; in station to
 			 * build isn't a rail station it's INVALID_RAILTYPE. */
 			if (rt != INVALID_RAILTYPE &&
@@ @@ -778,6 +800,29 @@ CommandCost CheckFlatLandBelow(TileArea @@
 	return cost;
+}
 /** Checks if a road stop can be built at the given tile.
  * @param tile Location of the stop.
  * @param flags Operation to perform.
  * @param invalid_dirs Prohibited directions (set of DiagDirections).
  * @param check_clear True if clearing tile should be performed (in that case, cost will be added).
  * @return The cost in case of success, or an error code if it failed.
  */
 static CommandCost CheckFlatLandRoadStop(TileIndex tile, DoCommandFlag flags, uint invalid_dirs, bool check_clear = true)
+{
 	int allowed_z = -1;
 	CommandCost cost = CheckBuildableTile(tile, invalid_dirs, allowed_z);
 	if (cost.Failed()) return cost;
 	if (check_clear) {
 		CommandCost ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
 		if (ret.Failed()) return ret;
 		cost.AddCost(ret);
+	}
 	return cost;
+}
 /**
  * Check whether we can expand the rail part of the given station.
  * @param st the station to expand
@@ @@ -1021,7 +1066,7 @@ CommandCost CmdBuildRailStation(TileInde @@
 	/* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
 	StationID est = INVALID_STATION;
 	/* Clear the land below the station. */
-	CommandCost cost = CheckFlatLandBelow(new_location, flags, 5 << axis, _settings_game.station.nonuniform_stations ? &est : NULL, true, rt);
+	CommandCost cost = CheckFlatLandRailStation(TileArea(tile_org, w_org, h_org), flags, 5 << axis, _settings_game.station.nonuniform_stations ? &est : NULL, rt);
 	if (cost.Failed()) return cost;
 	/* Add construction expenses. */
 	cost.AddCost((numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
@@ @@ -1585,7 +1630,7 @@ CommandCost CmdBuildRoadStop(TileIndex t @@
 		rts |= cur_rts;
+	}
-	CommandCost cost = CheckFlatLandBelow(TileArea(tile, 1, 1), flags, is_drive_through ? 5 << p1 : 1 << p1, NULL, !build_over_road);
+	CommandCost cost = CheckFlatLandRoadStop(tile, flags, is_drive_through ? 5 << p1 : 1 << p1, !build_over_road);
 	if (cost.Failed()) return cost;
 	uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
 	cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
@@ @@ -1942,7 +1987,7 @@ CommandCost CmdBuildAirport(TileIndex ti @@
 		return CMD_ERROR;
+	}
-	CommandCost cost = CheckFlatLandBelow(TileArea(tile, w, h), flags, 0, NULL);
+	CommandCost cost = CheckFlatLand(TileArea(tile, w, h), flags);
 	if (cost.Failed()) return cost;
 	/* Go get the final noise level, that is base noise minus factor from distance to town center */

src/unmovable_cmd.cpp

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Show inline comments

@@ @@ -98,7 +98,7 @@ void UpdateCompanyHQ(Company *c, uint sc @@
 	MarkTileDirtyByTile(tile + TileDiffXY(1, 1));
+}
-extern CommandCost CheckFlatLandBelow(TileArea tile_area, DoCommandFlag flags, uint invalid_dirs, StationID *station, bool check_clear = true, RailType rt = INVALID_RAILTYPE);
+extern CommandCost CheckFlatLand(TileArea tile_area, DoCommandFlag flags);
 /** Build or relocate the HQ. This depends if the HQ is already built or not
  * @param tile tile where the HQ will be built or relocated to
@@ @@ -113,7 +113,7 @@ CommandCost CmdBuildCompanyHQ(TileIndex @@
 	Company *c = Company::Get(_current_company);
 	CommandCost cost(EXPENSES_PROPERTY);
-	cost = CheckFlatLandBelow(TileArea(tile, 2, 2), flags, 0, NULL);
+	cost = CheckFlatLand(TileArea(tile, 2, 2), flags);
 	if (cost.Failed()) return cost;
 	if (c->location_of_HQ != INVALID_TILE) { // Moving HQ

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